Molecular insights on the re-colonization of the Limpopo Valley, South Africa, by Southern Ground-Hornbills

摘要: Southern Ground-Hornbills (Bucorvus leadbeateri) are co-operative breeders that occur in groups of 2–9 individuals. Long life spans, large territory sizes (100 km2), and low reproductive rates render these birds vulnerable to threats such as loss habitat, persecution, poisoning suitable nesting sites. In the Limpopo Valley South Africa, species is currently re-establishing after a serious decline numbers. this study, we use observation, capture population genetics approaches gain insights into nature re-colonisation Valley. We determined effective size, genetic diversity estimates, relatedness, parentage, sex ratios, age structure productivity. The was shown have occurred by number unrelated This demonstrable very levels average relatedness population, well favourable heterozygosity across categories. Within-group expected, with juveniles related at least one parent from their natal group. Inferences on breeding behaviour based testing results provides first evidence SGH not monogamous previously thought, two instances recorded extra pair copulations. Finally, demonstrate application microsatellite markers enumerate processes difficult quantify through observation.